#include<stdio.h>
int main ()
{
    iint day,month,year,sum,leap;
    printf("\nplease input year,month,day\n");
    scanf("%d,%d,%d",&year,&month,&day);
    switch(month)
    {
        case 1:sum=0;break;
        case 2:sum=31;break;
        case 3:sum=59;break;
        case 4:sum=90;break;
        case 5:sum=120;break;
        case 6:sum=151;break;
        case 7:sum=181;break;
        case 8:sum=212;break;
        case 9:sum=243;break;
        case 10:sum=273;break;
        case 11:sum=304;break;
        case 12:sum=334;break;
        default:printf("data error");break;
    }
    sum=sum+day;
    if(year%400==0||(year%4==0&&year%100!=0))
    leap=1;
elseleap=0;
if(leap==1&&month>2)
sum++
printf("It is the %dth day.\n",sum);
return 0;
}